地质通报2017，Vol.36Issue(7)：1097-1103,7.
内蒙古鄂尔多斯盆地下白垩统罗汉洞组剑龙类化石新材料
Hou Y D, Ji S A. New findings of stegosaurs from the Lower Cretaceous Luohandong Formation in the Ordos Basin, Inner Mongolia
摘要
Abstract
The Early Cretaceous Zhidan Group in the northern Ordos Basin of Inner Mongolia yielded a large number of tetrapods, which included turtles, choristoderes, crocodyliforms, psittacosaurs, stegosaurs, ankylosaurs, theropods, birds and primitive mammals. A well-preserved stegosaurian sacrum with paired ilia found from the Luohandong Formation, a middle-upper unit of Zhidan Group, is referred to as Wuerhosaurus ordosensis. The new findings give some additional characteristics to the pelvic girdle in W. ordo?sensis, such as both concave anterior margin and concave medio-posterior margin of the supra-acetabular flange. Based on compari?son of Wuerhosaurus ordosensis with W. homheni known from Xinjiang, the authors point out the differences in ilia between the two species:①a relatively short anterior iliac process in W. ordosensis;②the anterior iliac process with arched posterior portion of the dor?sal margin in W. ordosensis, and anterior iliac process with nearly parallel dorsal and ventral margins in W. homheni; ③the relatively small angle between anterior iliac processes and midline in W. ordosensis. These characteristics further provide the evidence that W. or?dosensis and W. homheni are different species.关键词
剑龙类/志丹群/罗汉洞组/下白垩统/鄂尔多斯Key words
Stegosauria/Zhidan Group/Luohandong Formation/Lower Cretaceous/Ordos分类
天文与地球科学引用本文复制引用
侯彦冬,姬书安..内蒙古鄂尔多斯盆地下白垩统罗汉洞组剑龙类化石新材料[J].地质通报,2017,36(7):1097-1103,7.基金项目
国家自然科学基金项目《内蒙古鄂尔多斯地区早白垩世脊椎动物群及相关地层对比》(批准号: 41372026)和中国地质调查局项目《关键地区区域地层标准建立与关键生物群演化和沉积岩试点填图》(编号:DD20160120) （批准号: 41372026）
